hann3ys @ !cT clAss !!!

People interact directly with computers in many fields in our daily life. ICT help people in managing several sectors. But we have threats to computer such as viruses and natural disasters.

a. name 4 main sectors that used ICT in their management.
b. state 2 differences between worms and viruses
c. There are 6 types of security measures that can be used to protect our computer.
d. Explain what is...:
i. crptography
ii. firewall

Answers :-
a. i) education - such as students use computers as reference tools for looking information in the
internet
ii) banking - bank administrators can control the entire banking systems and activities
iii) industry - to help workers operate machine
iv) e-commerce - to make buying and selling activities faster and more efficient through
internet
b. i) worms - operates through the network
- spreads copies of itself as a stand alone program
ii) virus - spreads through any medium
- spread copies of itself as a program that attaches to other program
c. 6 types of computer measures : -
i) anti-virus
iii) anti-spyware
iii) firewall
iv) backup
v) cryptography
vii) human aspects
d. i) cryptography is a process of transforming plaintext into ciphertext then back again.
( encryption and decryption )
ii) firewall is a piece of hardware or software which functions in a networked environment to
prevent some communications forbidden by security policy.

• 
• 
• 
• 
•